cs
set x 6
set y 0
ky gg 150 sa 90 ig x*80-200 sol 90
ky
repeat x [ky;sol 90;fd 40*kk(3);sa 90;fd 40;ka;repeat x-y  [ky;fd 80;ka;repeat 3 [ fd 80; sol 120]];
ky;gg (x-y)*80 ;set y y+1]